One place to write, schedule, and see what lands.
LetterBox folds four social platforms into one queue. Draft a post, tailor it per platform if you want, schedule it, and let the signals show you where it worked.
LinkedIn scheduler
→Queue a week of posts, preview the real feed render, and publish on time.
X (Twitter) scheduler
SOONSchedule single posts and full threads, timed for when your audience is awake.
Threads scheduler
SOONDraft and queue Threads posts without living inside the app all day.
Bluesky scheduler
SOONPost to Bluesky on schedule and keep your cross-platform cadence in sync.
Cross-posting
→Write once, then adapt the tone for each platform from a single editor.
Content calendar
SOONSee your whole week at a glance and drop each post on the day it should go out.
Signals & analytics
SOONFind out where you actually resonate, not just where the follower count is highest.
Live feed preview
SOONSee line breaks and the “…see more” fold exactly as each platform renders them.
Write it once. Post it everywhere.
Start with the platform you post to most, then let LetterBox carry it to the rest.
Start writing free →No credit card · Free for your first 30 posts each month